1. SNES
2. Dualshock 2
3. Nintendo 64
4. Xbox 360
Honorary mention: Wii remote, only for the concept and how it changed gaming, the actual controller leaves a lot to be desired (though this will change a bit with Motion+)
# of games above 75 on Metacritic (including downloadable):
360: 241 DS: 144
PS3: 152 PSP: 126
Wii: 85